/* --- 1. Variablen & Basis-Reset --- */
:root {
    --primary-color: #2980b9;      /* Sportliches Blau */
    --primary-hover: #1f6391;
    --secondary-color: #27ae60;    /* Erfolgs-Grün */
    --bg-color: #f4f7f6;           /* Sehr helles Grau-Blau für den Hintergrund */
    --card-bg: #ffffff;
    --text-main: #2c3e50;
    --text-muted: #7f8c8d;
    --border-color: #e0e6ed;
    --danger-color: #e74c3c;
    --radius: 12px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
}

/* --- 2. STICKY HEADER --- */
.app-header {
    background-color: var(--card-bg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.04);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 12px 20px;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-icon-navbar {
    height: 48px;
    width: auto;
}

.logout-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.2s;
}

.logout-btn:hover {
    background: var(--bg-color);
    color: var(--text-main);
}

/* --- 3. Logo & Navigation (In einer Reihe) --- */
.dashboard-nav-row {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 15px;
}

.logo-main {
    height: 100px;
    width: auto;
}

.tabs {
    display: flex;
    gap: 10px;
}

.tab-btn {
    background: transparent;
    border: none;
    padding: 10px 16px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.tab-btn:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

.tab-btn.active {
    background: var(--primary-color);
    color: white;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- 4. Layout & Cards (Die weißen Boxen - DIESER TEIL HAT GEFEHLT!) --- */
.container {
    max-width: 1000px;
    margin: 30px auto;
    padding: 0 20px;
}

.section {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

h2, h3 {
    margin-bottom: 16px;
    color: var(--text-main);
}

/* --- 5. Formulare & Inputs (DIESER TEIL HAT AUCH GEFEHLT!) --- */
input[type="text"],
input[type="number"],
input[type="date"],
input[type="password"],
input[type="email"],
select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.2s;
    background-color: #fafbfc;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(41, 128, 185, 0.1);
}

.full-width {
    margin-bottom: 15px;
}

.row {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* --- 6. Buttons --- */
button {
    font-family: inherit;
}

.primary-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    width: 100%;
}

.primary-btn:hover { background: var(--primary-hover); }
.primary-btn:active { transform: scale(0.98); }

.secondary-btn {
    background: var(--bg-color);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.secondary-btn:hover { background: #e2e8f0; }

.row button {
    background: #ffeeee;
    color: var(--danger-color);
    border: none;
    border-radius: 8px;
    width: 36px;
    height: 36px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
}

.row button:hover {
    background: var(--danger-color);
    color: white;
}

.add-btn {
    background: transparent;
    color: var(--primary-color);
    border: 2px dashed var(--border-color);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    width: 100%;
    margin-top: 10px;
    transition: all 0.2s ease;
}

.add-btn:hover {
    border-color: var(--primary-color);
    background: rgba(41, 128, 185, 0.05);
}

/* --- 7. Tabellen (Trainingsplan) --- */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th {
    text-align: left;
    padding: 12px;
    border-bottom: 2px solid var(--border-color);
    color: var(--text-muted);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: 16px 12px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: top;
}

tr:last-child td {
    border-bottom: none;
}

.sub-badge {
    display: inline-block;
    background: #f39c12;
    color: white;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: bold;
    margin-left: 8px;
}

/* --- 8. Login & Auth View --- */
#auth-view {
    max-width: 400px;
    margin: 80px auto;
}

/* --- 9. Calendar --- */
#calendar {
    min-height: 600px;
    margin-top: 20px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}